Yeah they're both on raw. Honestly... Summer had terrible eyes when I first got her. I switched her to Evo and it was fine for over a year. It seems to have gotten worse since they started being on TOTW, but then switching to raw hasn't helped either.
She gets a little bit on her normal eye, but it's mainly the bad one that is the problem. Mia rarely ever has problems (she has black fur around her eyes that kind of makes it look like tear staining sometimes but it's really just her markings).
Summer's always teared up the worst out of all of ours. She has the most extremely built head though so I do kind of attribute it to that. She has huge, prominent eyes and a shorter muzzle than the others.
and adding a bitch of cornstarch to the area (with a toothbrush).
I know what you mean but this made me LOL.
Thanks for the suggestions, we'll see if we can't get this under better control.